I have a droid X and I will be traveling abroad for 3 weeks. I do not have an international plan but I'm wondering what the functionality of the phone will be without it. Can I still use WiFi and GPS? Can I still use them if I leave it in airplane mode or is there a better way to prevent the phone from seeking a signal?? It's not a necessity that I have the phone but I am trying to asses whether or not I will be able to use it at all before I get there. Thanks!